Daily Exercise Prescription on the Basis of HR Variability among Men and Women

• Autores: Antti M. Kiviniemi, Arto J. Hautala, Hannu Kinnunen, Juuso Nissilä, Paula Virtanen, Jaana Karjalainen, Mikko P. Tulppo
• Localización: Medicine & Science in Sports & exercise: Official Journal of the American College of Sports Medicine, ISSN 0195-9131, Vol. 42, Nº. 7, 2010, págs. 1355-1363
• Idioma: inglés
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• Dialnet Métricas: 4 Citas
• Resumen

  • Purpose: To test the utility of HR variability (HRV) in daily exercise prescription in moderately active (approximately two exercises per week) men and women.

    Methods: A total of 21 men and 32 women were divided into standard training (ST: males = 7 and females = 7), HRV-guided training (HRV-I: males = 7 and females = 7; HRV-II: females = 10), and control (males = 7 and females = 8) groups. The 8-wk aerobic training period included 40-min exercises at moderate and vigorous intensities (70% and 85% of maximal HR). The ST group was instructed to perform two or more sessions at moderate and three or more sessions at vigorous intensity weekly. HRV-I and HRV-II groups trained on the basis of changes in HRV, measured every morning. In the HRV-I group, an increase or no change in HRV resulted in vigorous-intensity training on that day. Moderate-intensity exercise or rest was prescribed if HRV had decreased. The HRV-II group performed a vigorous-intensity exercise only when HRV had increased. Peak oxygen consumption (V[spacing dot above]O2peak) and maximal workload (Loadmax) were measured by a maximal bicycle ergometer test before and after the intervention.

    Results: The changes in V[spacing dot above]O2peak did not differ between the training groups either in men or in women. In men, the change in Loadmax was higher in the HRV-I group than in the ST group (30 +/- 8 vs 18 +/- 10 W, P = 0.033). In women, no differences were found in the changes in Loadmax between the training groups (18 +/- 10, 15 +/- 11, and 18 +/- 5 W for ST, HRV-I, and HRV-II, respectively). The HRV-II group performed fewer vigorous-intensity exercises than the ST and HRV-I groups (1.8 +/- 0.3 vs 2.8 +/- 0.6 and 3.3 +/- 0.2 times per week, respectively, P < 0.01 for both).

    Conclusions: HRV measurements are beneficial in exercise training prescription in moderately active men and women. Women benefit from HRV guidance by achieving significant improvement in fitness with a lower training load